clk: msm: gcc: Add dependency on GCC-XO clock in GPUCC driver

For ARM32 device, GCC driver is probing later than GPUCC driver and
as a result of this bootup error is occurring. Fix the same by
adding dependency on XO clock in GPUCC driver probe so that GPUCC
probe will defer until registration of GCC clocks.

Change-Id: I3c2d18719028d121efac4c8233627314f1e511be
Signed-off-by: Amit Nischal <anischal@codeaurora.org>